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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 FEB 98


    POOL ELEVATIONS  STORAGE     RELEASES       EVAP  INFLOW   RAINFALL
DAY      FT-NGVD     2400HR         DSF        INCHES   ADJ     INCHES
      0800    2400    AC-FT   POWER    TOTAL  8A TO 8A  DSF    7A TO  7A
                                                               DAM   BSN
PRIOR MONTH  762.22     7764
 1   762.26  763.48     9031      0      289   0.040     925   0.95  0.83
 2   763.34  763.05     8569      0      354   0.070     125   0.00  0.00
 3   762.96  762.70     8226      0      229   0.080      50   0.00  0.00
 4   762.65  762.46     7995      0      157   0.070      50   0.00  0.00
 5   762.43  762.29     7831      0      114   0.050      40   0.00  0.00

 6   762.26  762.18     7725      0       82   0.050      35   0.00  0.00
 7   762.15  762.09     7639      0       64   0.080      30   0.00  0.00
 8   762.07  762.03     7581      0       51   0.100      25   0.00  0.00
 9   762.02  761.99     7543      0       43   0.060      25   0.00  0.00
10   761.98  761.99     7543      0       39   0.070      25   0.01  0.00

11   761.96  761.92     7482      0       34   0.080      10   0.00  0.00
12   761.91  761.90     7464      0       29   0.080      10   0.00  0.00
13   761.89  761.86     7429      0       25   0.060      10   0.00  0.00
14   761.85  761.86     7429      0       23   0.100      25   0.00  0.00
15   761.85  761.85     7420      0       22   0.140      25   0.00  0.00

16   761.85  761.85     7420      0       23   0.030      25   0.00  0.01
17   761.83  761.84     7412      0       22   0.020      25   0.05  0.02
18   761.83  761.82     7394      0       20   0.050      15   0.02  0.01
19   761.82  761.82     7394      0       19   0.110      15   0.05  0.03
20   761.82  761.81     7385      0       19   0.055      15   0.00  0.00

21   761.81  761.80     7377      0       18   0.110      15   0.00  0.00
22   761.80  761.80     7377      0       18   0.100      20   0.00  0.00
23   761.81  761.79     7368      0       17   0.040      20   0.02  0.01
24   761.79  761.79     7368      0       17   0.070      20   0.00  0.00
25   761.78  761.79     7368      0       16   0.200      20   0.00  0.00

26   761.79  761.79     7368      0       17   0.140      20   0.00  0.00
27   761.79  761.78     7359      0       16   0.180      20   0.00  0.00
28   761.77  761.76     7342      0       15   0.160      10   0.00  0.00

TOTAL                             0     1792   2.395    1650   1.10  0.91
AVERAGE   762.04                  0       64              59 NORMAL= 1.63

MAXIMUM   763.55        9107   DATE= 1    TOP CONSERVATION POOL    761.50
MINIMUM   761.76        7342   DATE=28    TOP FLOOD POOL           784.00

                      INFLOW VOLUME=     3273 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION